一种卫星通用遥控指令译码器设计

Design of Universal Telecommand Decoder for Satellite

针对卫星传统遥控指令译码器已经无法满足通用性、适应性、好用易用及批量生产的要求,提出了一种新型遥控指令译码器设计。与传统遥控指令译码器相比,新型遥控指令译码器能够同时适应脉冲编码调制(PCM)遥控体制和空间数据系统咨询委员会(CCSDS)分包遥控体制的两种标准;并且配置了两种输入接口,既能直接接收地面发送的直接指令帧进行译码输出,又能接收星载计算机发出的间接指令帧进行译码输出。新型遥控指令译码器配置的与星载计算机的接口以及具备的自主健康管理功能,非常适用于有智能化自主运行管理需求的卫星。该译码器通用性和适应性强,非常适用于高集成度的抗辐照专用集成电路(ASIC)器件研制,以及高可靠性和长寿命产品的批量生产。新型遥控指令译码器设计已在新遥感平台及相应的卫星研制中得到验证。与传统遥控指令译码器相比,新型遥控指令译码器的功能、性能均得到显著提高。

The traditional satellite telecommand decoder has been unable to meet the requirements of versatility, adaptability, easy use and mass production. In this paper, a new telecommand de-coder design is proposed. Compared with the traditional telecommand decoder, the new telecom-mand decoder can adapt to PCM telecommand system and CCSDS layered telecommand system; it provides two input interfaces to receive the direct command frame sent by the ground directly to decode and output, and also recevive the indirect command frame sent by the on-board computer to decode and output. The configuration of the interface with the computer and the function of self health diagnosis are very suitable for the use of satellites with intelligent operation and man-agement requirements. The decoder is so versatile and adaptable that it is very suitable for the de-velopment of highly integrated antiradiation ASIC devices and mass production of reliability and long life products. The design is verified by the satellite of new remote sensing paltform and cor-responding model satellites. Compared with the traditional telecommand decoder, the function and perfor-mance of the new telecommand decoder have been greatly improved.